, Solutions Manual for Facilities Design, t t t t
5e by Sunderesh Heragu (All Chapters)
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CHAPTER 1 - Introduction to Facility Design
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1.4 Solutions
1. This is an open-ended question and could be given as a mini-project for students.
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2. Design problems are those that have a longer time span, typically three to five years or more,
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whereas planning problems have a shorter time span. Students will come up with a long list of
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design and planning problems and Figure 1.1 should be of some help. Although it is desirable
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to solve the two problems simultaneously, so that a solution satisfies design and operational
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performance measures, doing so makes the problem intractable and hard to solve.
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S.S. Heragu, Facilities Design 3
, CHAPTER 2 – Supply Chain Design t t t t t
2.6 Solutions t
1. Students are encouraged to consult business publications and trade magazines to identify the
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supply chain design and operational trends witnessed in the past 15 years.
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2. Once again, a consultation of business publications and trade magazines will help the students
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identify companies in the disruptive innovation space.
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S.S. Heragu, Facilities Design 4
, CHAPTER 3 – Logistics and Location Models t t t t t t
3.11 Solutions t
1. As indicated in Section 3.1 as well as Chapter 1, facility location must be addressed in the very
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early stages of facility design – as soon as the products to be produced and markets to be served
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have been identified.
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2. Facility location is a sub-problem in logistics management. As defined in Section 3.1, logistics
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management covers not only location, allocation, but also the distribution methods, costs, and a
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number of other logistics related factors.
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3. It should serve the needs of the company, minimize costs, must mesh well with the existing
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network of supply chain of suppliers, plants and customers, etc. This is a good question for in-
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class discussion. t
4. See Section 3.3.t t
5. See Section 3.3.t t
6. See Table 3.1. t t
7. This is an interesting project for undergraduate students that could be supplemented with in-
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class discussion.
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8. Based on the calculations done in the table below, we find that site #6 is the best location
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based on the subjective factors.
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Location Factors t
0.15 0.2 0.4 0.25
Site Number t 1 2 3 4 Score
1 90 40 80 70 71.00
2 100 30 80 50 65.50
3 50 80 85 60 72.50
4 60 90 60 75 69.75
5 90 30 65 80 65.50
6 90 30 85 85 74.75
9. Based on the calculations done in the table below, we find that site #3 is the best location based on
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the subjective factors.
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Location Factors t
0.4 0.2 0.3 0.1
Site Number t 1 2 3 4 Score
1 55 20 10 50 34
2 20 75 80 50 52
3 90 15 85 100 74.5
4 80 95 20 25 59.5
5 30 90 25 25 40
Explanation:
Site 1: 0.4(55) +0.2(20) +0.3(10) +0.1(10) = 34
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S.S. Heragu, Facilities Design 5